webgl_portal
对应 three.js 示例地址 。
仅需关注 init 函数的内容，其他部分都是示例小程序所使用的描述配置。
js
import * as THREE from "three";
import * as CameraUtils from "three/examples/jsm/utils/CameraUtils.js";
import { OrbitControls } from "three/examples/jsm/controls/OrbitControls.js";
/** @type {import("@minisheeep/mp-three-examples").OfficialExampleInfo} */
const exampleInfo = {
name: "webgl_portal",
useLoaders: [],
info: [
[
{
tag: "a",
link: "https://threejs.org",
content: "three.js"
},
{
tag: "text",
content: "- portal"
}
]
],
init: ({ window, canvas, GUI, Stats, needToDispose, useFrame }) => {
let camera, scene, renderer;
let cameraControls;
let smallSphereOne, smallSphereTwo;
let portalCamera, leftPortal, rightPortal, leftPortalTexture, reflectedPosition, rightPortalTexture, bottomLeftCorner, bottomRightCorner, topLeftCorner;
init();
function init() {
renderer = new THREE.WebGLRenderer({ antialias: true, canvas });
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.setAnimationLoop(animate);
renderer.localClippingEnabled = true;
renderer.toneMapping = THREE.ACESFilmicToneMapping;
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 5e3);
camera.position.set(0, 75, 160);
cameraControls = new OrbitControls(camera, renderer.domElement);
cameraControls.target.set(0, 40, 0);
cameraControls.maxDistance = 400;
cameraControls.minDistance = 10;
cameraControls.update();
const planeGeo = new THREE.PlaneGeometry(100.1, 100.1);
const portalPlane = new THREE.Plane(new THREE.Vector3(0, 0, 1), 0);
const geometry = new THREE.IcosahedronGeometry(5, 0);
const material = new THREE.MeshPhongMaterial({
color: 16777215,
emissive: 3355443,
flatShading: true,
clippingPlanes: [portalPlane],
clipShadows: true
});
smallSphereOne = new THREE.Mesh(geometry, material);
scene.add(smallSphereOne);
smallSphereTwo = new THREE.Mesh(geometry, material);
scene.add(smallSphereTwo);
portalCamera = new THREE.PerspectiveCamera(45, 1, 0.1, 500);
scene.add(portalCamera);
bottomLeftCorner = new THREE.Vector3();
bottomRightCorner = new THREE.Vector3();
topLeftCorner = new THREE.Vector3();
reflectedPosition = new THREE.Vector3();
leftPortalTexture = new THREE.WebGLRenderTarget(256, 256);
leftPortal = new THREE.Mesh(
planeGeo,
new THREE.MeshBasicMaterial({ map: leftPortalTexture.texture })
);
leftPortal.position.x = -30;
leftPortal.position.y = 20;
leftPortal.scale.set(0.35, 0.35, 0.35);
scene.add(leftPortal);
rightPortalTexture = new THREE.WebGLRenderTarget(256, 256);
rightPortal = new THREE.Mesh(
planeGeo,
new THREE.MeshBasicMaterial({ map: rightPortalTexture.texture })
);
rightPortal.position.x = 30;
rightPortal.position.y = 20;
rightPortal.scale.set(0.35, 0.35, 0.35);
scene.add(rightPortal);
const planeTop = new THREE.Mesh(planeGeo, new THREE.MeshPhongMaterial({ color: 16777215 }));
planeTop.position.y = 100;
planeTop.rotateX(Math.PI / 2);
scene.add(planeTop);
const planeBottom = new THREE.Mesh(
planeGeo,
new THREE.MeshPhongMaterial({ color: 16777215 })
);
planeBottom.rotateX(-Math.PI / 2);
scene.add(planeBottom);
const planeFront = new THREE.Mesh(planeGeo, new THREE.MeshPhongMaterial({ color: 8355839 }));
planeFront.position.z = 50;
planeFront.position.y = 50;
planeFront.rotateY(Math.PI);
scene.add(planeFront);
const planeBack = new THREE.Mesh(planeGeo, new THREE.MeshPhongMaterial({ color: 16744447 }));
planeBack.position.z = -50;
planeBack.position.y = 50;
scene.add(planeBack);
const planeRight = new THREE.Mesh(planeGeo, new THREE.MeshPhongMaterial({ color: 65280 }));
planeRight.position.x = 50;
planeRight.position.y = 50;
planeRight.rotateY(-Math.PI / 2);
scene.add(planeRight);
const planeLeft = new THREE.Mesh(planeGeo, new THREE.MeshPhongMaterial({ color: 16711680 }));
planeLeft.position.x = -50;
planeLeft.position.y = 50;
planeLeft.rotateY(Math.PI / 2);
scene.add(planeLeft);
const mainLight = new THREE.PointLight(15198183, 2.5, 250, 0);
mainLight.position.y = 60;
scene.add(mainLight);
const greenLight = new THREE.PointLight(65280, 0.5, 1e3, 0);
greenLight.position.set(550, 50, 0);
scene.add(greenLight);
const redLight = new THREE.PointLight(16711680, 0.5, 1e3, 0);
redLight.position.set(-550, 50, 0);
scene.add(redLight);
const blueLight = new THREE.PointLight(12303358, 0.5, 1e3, 0);
blueLight.position.set(0, 50, 550);
scene.add(blueLight);
window.addEventListener("resize", onWindowResize);
needToDispose(renderer, scene, cameraControls);
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function renderPortal(thisPortalMesh, otherPortalMesh, thisPortalTexture) {
thisPortalMesh.worldToLocal(reflectedPosition.copy(camera.position));
reflectedPosition.x *= -1;
reflectedPosition.z *= -1;
otherPortalMesh.localToWorld(reflectedPosition);
portalCamera.position.copy(reflectedPosition);
otherPortalMesh.localToWorld(bottomLeftCorner.set(50.05, -50.05, 0));
otherPortalMesh.localToWorld(bottomRightCorner.set(-50.05, -50.05, 0));
otherPortalMesh.localToWorld(topLeftCorner.set(50.05, 50.05, 0));
CameraUtils.frameCorners(
portalCamera,
bottomLeftCorner,
bottomRightCorner,
topLeftCorner,
false
);
thisPortalTexture.texture.colorSpace = renderer.outputColorSpace;
renderer.setRenderTarget(thisPortalTexture);
renderer.state.buffers.depth.setMask(true);
if (renderer.autoClear === false) renderer.clear();
thisPortalMesh.visible = false;
renderer.render(scene, portalCamera);
thisPortalMesh.visible = true;
}
function animate() {
const timerOne = Date.now() * 0.01;
const timerTwo = timerOne + Math.PI * 10;
smallSphereOne.position.set(
Math.cos(timerOne * 0.1) * 30,
Math.abs(Math.cos(timerOne * 0.2)) * 20 + 5,
Math.sin(timerOne * 0.1) * 30
);
smallSphereOne.rotation.y = Math.PI / 2 - timerOne * 0.1;
smallSphereOne.rotation.z = timerOne * 0.8;
smallSphereTwo.position.set(
Math.cos(timerTwo * 0.1) * 30,
Math.abs(Math.cos(timerTwo * 0.2)) * 20 + 5,
Math.sin(timerTwo * 0.1) * 30
);
smallSphereTwo.rotation.y = Math.PI / 2 - timerTwo * 0.1;
smallSphereTwo.rotation.z = timerTwo * 0.8;
const currentRenderTarget = renderer.getRenderTarget();
const currentXrEnabled = renderer.xr.enabled;
const currentShadowAutoUpdate = renderer.shadowMap.autoUpdate;
renderer.xr.enabled = false;
renderer.shadowMap.autoUpdate = false;
renderPortal(leftPortal, rightPortal, leftPortalTexture);
renderPortal(rightPortal, leftPortal, rightPortalTexture);
renderer.xr.enabled = currentXrEnabled;
renderer.shadowMap.autoUpdate = currentShadowAutoUpdate;
renderer.setRenderTarget(currentRenderTarget);
renderer.render(scene, camera);
}
}
};
export {
exampleInfo as default
};ts
import { Loader, TypedArray } from 'three';
/**
* 官网示例的多端使用封装把版本
* */
export interface OfficialExampleInfo extends MiniProgramMeta {
/*** 示例名称（保持和官网一致）*/
name: string;
/** main */
init: (context: LoadContext) => void;
}
export interface LoadContext {
//为了减少官方代码的改动，实际上等同于 canvas
window: EventTarget & { innerWidth: number; innerHeight: number; devicePixelRatio: number };
/** HTMLCanvasElement */
canvas: any;
/** https://www.npmjs.com/package/lil-gui */
GUI: any;
/**
* https://www.npmjs.com/package/stats.js
* 也可以使用其他受支持的版本
* */
Stats: any;
/** 收集需要 dispose 的对象（官方示例没有处理这部分）*/
needToDispose: (...objs: any[]) => void | ((fromFn: () => any[]) => void);
/**基于 raq 的通用封装 */
useFrame(animateFunc: (/** ms */ delta: number) => void): { cancel: () => void };
/** 显示加载模态框 */
requestLoading(text?: string): Promise<void>;
/** 隐藏加载模态框*/
cancelLoading(): void;
/** 保存文件的通用封装*/
saveFile(
fileName: string,
data: ArrayBuffer | TypedArray | DataView | string
): Promise<string | null>;
/** 示例使用 DracoDecoder 时的资源路径 */
DecoderPath: {
GLTF: string;
STANDARD: string;
};
/** 为资源路径拼上 CDN 前缀 */
withCDNPrefix(path: string): string;
/**
* 在小程序中应使用 import { VideoTexture } from '@minisheep/three-platform-adapter/override/jsm/textures/VideoTexture.js';
* 正常情况（web） 可直接使用 THREE.VideoTexture
* */
getVideoTexture(videoOptions: VideoOptions): Promise<[{ isVideoTexture: true }, video: any]>;
/**
* 在小程序中应使用 import { CameraTexture } from '@minisheep/three-platform-adapter/override/jsm/textures/CameraTexture.js';
* 正常情况（web） 可参考示例 webgl_materials_video_webcam
* */
getCameraTexture(): { isVideoTexture: true };
/** 用于动态修改 info 中的占位符*/
bindInfoText(template: `$${string}$`, initValue?: string): { value: string };
/** 分屏控件对应的事件回调 */
onSlideStart(handle: () => void): void;
/** 分屏控件对应的事件回调 */
onSlideEnd(handle: () => void): void;
/** 分屏控件对应的事件回调 */
onSlideChange(handle: (offset: number, boxSize: number) => void): void;
}
export type VideoOptions = {
src: string;
/** 相当于 HTMLVideoElement 的 naturalWidth (小程序中获取不到)*/
width: number;
/** 相当于 HTMLVideoElement 的 naturalHeight (小程序中获取不到)*/
height: number;
loop?: boolean;
autoplay?: boolean;
muted?: boolean;
};
/** 示例小程序中使用的一些配置 */
export interface MiniProgramMeta {
/** 用于统计加载相关信息 */
useLoaders: Loader[];
/** 通用 info */
info: TagItem[][];
/** 特殊 info */
infoPanel?: {
left?: [string, string][];
right?: [string, string][];
};
/** 分屏控件配置 */
needSlider?: {
/** 方向 */
direction?: 'horizontal' | 'vertical';
/** 初始偏移 0-100 */
initPosition?: number;
};
/** 操作摇杆控件 */
needArrowControls?: boolean;
/** 默认需要的画布类型 */
canvasType?: '2d' | 'webgl' | 'webgl2';
/** 为保持效果一致所需要的画布样式 */
canvasStyle?: {
bgColor?: string;
width?: number | string;
height?: number | string;
};
/** 部分示例需要在加载前进行一些提示 */
initAfterConfirm?: {
/**
* 提示类型
* @default 'default'
* */
type?: 'warning' | 'default';
text: string[];
};
}
export interface BaseTag<T extends string> {
tag: T;
content: string;
}
export interface ATag extends BaseTag<'a'> {
link: string;
}
export type TextTag = BaseTag<'text'>;
export type TagItem = TextTag | ATag;